Bung structure for metal barrels and the like



Nov. 6 1923. 1,473,411

F. G. WACKER BUNG STRUCTURE FOR METAL BARRELS AND THE LIKE Filed Feb.25, '1921 Patented Nov. 6,1923.

UNITED STATES FREDERICK G. WACKER, OF CHICAGO, ILLINOIS.

BUNG STRUCTURE FOR METAL BARRIES AND THE LIKE.

Application filed February 25, 1921. Serial No. 447,844.

To all whom it may concern:

Be it known that I, FREDERICK G. WACKER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Bung Structures forMetal Barrels and the like, of which thefollowing is a specification.

In the construction of metal barrels, it is usual to provide in the heador body, means for filling and emptying the receptacle. The usualconstruct-ion is to weld a threaded ring to the head sheet and screwinto said ring the bung or closure with proper acking between thesealing surfaces 0 the moveable and fixed members. The welding of such aring is an expensive and tedious operation, and an object of myinvention is to provide a bung construction that will dispense wit-hwelding as a means of insuring tightness of the barrel at the bung-ring.Furthermore it is customary to provide the bung-ring on the exterior ofthe barrel where it is particularly subject to damage, and the resultantring injury, often met with in practice, is one of the principal causesof the barrel-loss, for commercially it is found to be so expensive asto be impractical to remove the welded bung-ring and replace it with anew one. Distinctively, I place the bung-ring inside of the barrel.

In the drawings wherein I have illustrated the structure embodying myinvention Fig. 1 is a vertical cross section with parts in elevationshowing one form of construction; Fig. 2 is a horizontal section on line22 thereof; Fig. 3 is a detail; Fig. 4 is a vertical section showinganother form of construction and Fig. 5 is a plan vie thereof.

The head-sheet has an aperture made therein, surrounded within thebarrel by a ring 11 secured against rotation by suitable attachment tothe head-sheet, so that a portion 13 of the head-sheet itself ispresented as a seat to receive'the packing that is pressed down by acompression flange 15 of the bung or closure 16, the threaded stemportion whereof engages the threaded lower portion 18 of ring 11. Withthis construction it will be apparent that tightness of union in thesense of liquid-proofness as between the ring and the head-sheet is notnecessary, as the sealing takes place between the head-sheet and thecompression flange of the bung.

The ring preferably provides at its top an annular boss portion 19 overand upon which the head-sheet may be smoothly shaped to give a flatbearing 13 and a strengthenin head 20. The ring may, without anywelding, be attached adequately to prevent it from rotating and inFigures 1 to 3 such ring is shown as formed with a chamber 22 above itsthreaded portion this chamber being of greater diameter than thethreaded portion and terminating near its bottom in a lateral groove 23,into which may project radical points 24, so that the metal at the lipof the orifice may be spun down the wall of chamber 22 and into groove23, the points '24. (if provided) indenting the under-turned metal andaiding in preventing rotation of the ring. Sufiicient union to preventrotation may be secured by the spinning without the presence of thepoints, and other means of preventing rotation may be used. As shown inFig. 4 the ring l1 may have a flange 25 spot-welded as at 26 to thehead-sheet 10, the lip of the orifice in the head-sheet being merelyspun over the boss 19' into the chamber 22'.

It will be understood by those skilled in the art that many otherchanges in construction ma be made without departing from the spirlt ofmy invention, within the scope of the appended claims.

I claim:

1. The combination of a metallic barrel having in its sheet metal wallan orifice, a ring within the barrel surrounding the orifice havingtherethrough a passage, opened toward the axis of the ring, and being oftwo diameters, the lower portion of smaller diameter beingscrew-threaded internally and the upper portion of larger diameterconstituting a chamber, the lip of the orifice in said wall being turnedinto said chamber, means securing the ring against rotation in thebarrel wall, and a bung having a sealing head to co-act with the barrelwall bordering said orifice and having a threaded stem to engage thethreaded portion of the ring.

2. The combination of a metal barrel having in its sheet-metal wall anorifice, a ring within the barrel surrounding the orifice, said ringhaving therethrough a passage open toward the axis of the ring andcomprising a lower portion of smallest diameter screw-threadedinternally, an upper portion means securing the ring against rotation oflarger diameter constituting a chamber in the barrel-wall, and a hunghaving a and an annular groove of largest diameter sealing head to coactwith the barrel-wall 10 forming a bottom enlargement of said borderingsaid orifice and having a threaded 5 chamber, the lip of the orifice insaid stem to engage the threaded portion of the barrel-wall being turnedinto said ohamring. v her and under-turned into said groove, FREDERICKG. WAGKER.

